检验医学 ›› 2019, Vol. 34 ›› Issue (12): 1091-1096.DOI: 10.3969/j.issn.1673-8640.2019.12.007

• 临床应用研究?论著 • 上一篇    下一篇

1株血液感染大肠弯曲菌生物学特性及全基因组序列相关性分析

黄春兰, 徐秋红, 余洪立, 马丽梅, 廖致红()   

  1. 柳州市人民医院,广西 柳州 545001
  • 收稿日期:2018-08-14 出版日期:2019-12-30 发布日期:2020-01-03
  • 作者简介:null

    作者简介:黄春兰 ,女,1983年生,硕士,主管技师,主要从事病原微生物检测工作。

  • 基金资助:
    广西壮族自治区卫生计生委自筹课题(Z20170660);广西壮族自治区卫生计生委自筹课题(Z20170669);柳州市人民医院院内课题(lryjj201602)

Characteristics and whole-genome sequencing of 1 isolate of Campylobacter coil from blood

HUANG Chunlan, XU Qiuhong, YU Hongli, MA Limei, LIAO Zhihong()   

  1. The People's Hospital of Liuzhou,Liuzhou 545001,Guangxi,China
  • Received:2018-08-14 Online:2019-12-30 Published:2020-01-03

摘要:

目的 研究1株血液感染大肠弯曲菌的生物学特性与全基因组序列。方法 运用常规方法、质谱和全基因组测序等技术对从1位老年女性血液中分离出的1株大肠弯曲菌进行菌种鉴定、药物敏感性试验、基因序列分析及功能预测分析等。结果 分离出的大肠弯曲菌在室温条件下血培养瓶中可存活3个月。其对红霉素敏感,对环丙沙星和四环素耐药。全基因组测序得到其基因组大小约为1.86 Mb,分析得到1 693个基因,3个tRNA序列和40个rRNA序列,通过COG数据库和GO数据库比对注释共得到21组COG功能和3个GO方面的内容,预测耐药相关基因居前5位的是CmeBTetOCmeCMacBCmeA。毒力表达相关基因居前5位的是Cj1435cfsrCECP_2806、lpg0769和A1S-0053。结论 分离出的大肠弯曲菌对红霉素敏感,对环丙沙星和四环素耐药,菌株耐药性与CmeBTetOCmeCMacBCmeA等基因相关,毒力与Cj1435cfsrC等毒力相关基因的表达有关。

关键词: 大肠弯曲菌, 血液感染, 生物学特性, 全基因组测序, 耐药性, 耐药基因, 毒力基因

Abstract:

Objective To investigate the characteristics and whole-genome sequencing of 1 isolate of Campylobacter coil from blood. Methods The isolate from an elder female blood was identified for type,drug susceptibility and gene sequence by routine biochemical method,mass spectrometry,genomic sequencing and so on. Results This Campylobacter coil was collected,which can survive for 3 months in blood culture bottle at room temperature,and it was sensitive to erythromycin,but it was resistant to ciprofloxacin and tetracycline. The data of whole-genome sequencing showed 1.86 Mb,the number of gene was 1 693. The sequence numbers of tRNA and rRNA were 3 and 40,respectively. A total of 21 groups of COG functions and 3 GO contents were obtained by comparing the annotations between COG database and GO database. The top 5 drug resistance genes were CmeB,TetO,CmeC,MacB and CmeA. The top 5 drug virulence genes were Cj1435c,fsrC,ECP_2806,lpg0769 and A1S-0053. Conclusions The isolate keeps high sensitive to erythromycin,but it is highly resistant to ciprofloxacin and tetracycline. There is a correlation between drug resistance and CmeB,TetO,CmeC,MacB,CmeA and so on. The virulence is related with Cj1435c,fsrC and so on.

Key words: Campylobacter coil, Blood infection, Biological characteristic, Whole-genome sequencing, Drug resistance, Drug resistance gene, Virulence gene

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